21382268817

Names of 21382268817

• Cardinal: 21382268817 can be written as Twenty-one billion, three hundred eighty-two million, two hundred sixty-eight thousand, eight hundred seventeen.

Scientific notation

• Scientific notation: 2.1382268817 × 10¹⁰

Factors of 21382268817

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 212

Divisors of 21382268817

• Number of divisors d(n): 144
• Complete list of divisors:
  1 3 7 13 21 31 39 49 61 91 93 97 147 183 217 273 291 403 427 637 651 679 793 1209 1261 1281 1519 1891 1911 2037 2379 2821 2989 3007 3721 3783 4557 4753 5551 5673 5917 8463 8827 8967 9021 11163 13237 14259 16653 17751 19747 21049 24583 26047 26481 38857 39091 39711 41419 48373 59241 61789 63147 73749 76921 78141 92659 115351 116571 117273 124257 145119 147343 172081 182329 183427 185367 230763 273637 277977 289933 338611 346053 360937 442029 516243 538447 546987 550281 807457 820911 869799 1015833 1082811 1204567 1283989 1499563 1615341 1915459 2370277 2384551 2422371 2526559 3613701 3769129 3851967 4498689 4692181 5652199 5746377 7110831 7153653 7579677 8987923 10496941 11189047 11307387 14076543 16691857 16956597 17685913 26963769 31490823 32845267 33567141 50075571 53057739 73478587 78323329 98535801 116842999 145457611 220435761 229916869 234969987 350528997 436372833 548263303 689750607 1018203277 1644789909 3054609831 7127422939 21382268817
• Sum of all divisors σ(n): 37868253696
• Sum of proper divisors (its aliquot sum) s(n): 16485984879
• 21382268817 is a deficient number, because the sum of its proper divisors (16485984879) is less than itself. Its deficiency is 4896283938

Bases of 21382268817

• Binary: 10011111010011110111000011110010001₂
• Hexadecimal: 0x4FA7B8791
• Base-36: 9TMG87L

Squares and roots of 21382268817

• 21382268817 squared (21382268817²) is 457201419762450579489
• 21382268817 cubed (21382268817³) is 9776003660874774573311224494513
• The square root of 21382268817 is 146226.7718887345
• The cube root of 21382268817 is 2775.5641010837

Scales and comparisons

• 21,382,268,817 seconds is equal to 679 years, 46 weeks, 1 day, 23 hours, 6 minutes, 57 seconds.
• To count from 1 to 21,382,268,817 would take you about one thousand, three hundred fifty-nine years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 21382268817 cubic inches would be around 231.3 feet tall.

Recreational maths with 21382268817

• 21382268817 backwards is 71886228312
• The number of decimal digits it has is: 11
• The sum of 21382268817's digits is 48
• More coming soon!